Malicious PDF — malware analysis report

Static analysis result for SHA-256 7606a3344cdeb7ff…

MALICIOUS

PDF

42.5 KB Created: 2020-09-27 03:34:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01bf798c79d4dcaf87714ae968131489 SHA-1: f771d41c7a248898f64173ba84ddddf7df346bb2 SHA-256: 7606a3344cdeb7ff6a1a80a310095004fff05d41f3e83e1f83b343d935ae1441
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.link/pify?keyword=hacked+unblocked+games+500'. The document body also contains this URL and numerous other links to Shopify, suggesting an attempt to create a link farm or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/pify?keyword=hacked+unblocked+games+500
    • http://files.virtus.hu/uploads/1/3/1/4/131407423/jukajepelosiw-baviresaf-volozuxavajoru.pdf
    • http://files.full-fillednutrition.com/uploads/1/3/2/6/132681150/dukokiditirozejel.pdf
    • http://files.wpcbuildingservices.com/uploads/1/3/1/3/131383407/pijesotapelos_xovavotoxinut_fotajav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/misapunudogakibew.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/mifabizetemawig.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/13884381821.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/3323459323.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/westminster_shorter_catechism_modern_english.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9509/files/javascript_get_list_of_stylesheets.pdf
    • https://cdn.shopify.com/s/files/1/0482/0887/1581/files/70-741_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/lepujadawu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/gmat_sentence_correction_practice_questions_and_answers.pdf
    • https://6a250014-abc4-41c9-adc2-7df0074815a2.filesusr.com/ugd/bdc04d_a391ad64af494663a37f346efa84192f.pdf?index=true
    • https://5da08e42-7c8d-4fe7-b455-3d5ee3a38356.filesusr.com/ugd/84a5c6_6b41322acf994ebb96b1d1620791db33.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000677c.bin
21f8c63285230421ccce3a1ee1e42185546beed1783d5a6063cf67c0bd2119b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677C 5592 bytes
font_01_sfnt_off00007a6f.bin
0d7aa48b3df31d5a745a9da67af88626ed0139642a229dbb2433762d9f2fa4e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6F 10092 bytes

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